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Product Detailed Parameters
- Description：1.6X1.2 SEAM SEAL MHZ QUARTZ XTA
- Series：QT161S
- Mfr：QST
- Package：Tape & Reel (TR)
- Type：MHz Crystal
- Frequency：26 MHz
- Frequency Stability：±20ppm
- Frequency Tolerance：±20ppm
- Load Capacitance：6pF
- ESR (Equivalent Series Resistance)：100 Ohms
- Operating Mode：Fundamental
- Operating Temperature：-20°C ~ 70°C
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.063" L x 0.047" W (1.60mm x 1.20mm)
- Height - Seated (Max)：0.016" (0.40mm)
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Overview
The QST QT161S-26.000MDDB-T is a surface-mount crystal resonator operating at a fundamental frequency of 26 MHz. It features a compact 4-SMD, No Lead package with dimensions of 1.60mm x 1.20mm x 0.35mm. The component exhibits a load capacitance of 6pF and a series resistance of 80 Ohms. Frequency stability is rated at ±20ppm over the operating temperature range of -20°C to +70°C.
Feature Summary
- Compact 4-SMD no-lead surface mount design for automated assembly
- High frequency stability of ±20ppm within specified temperature limits
- Low profile physical structure suitable for space-constrained PCB layouts
Applications
- Microcontroller clock generation circuits
- Communication module timing references
- Digital signal processing system oscillators
Procurement Notes
Verify the specific suffix 'MDDB' against official QST documentation to confirm the exact load capacitance and stability grade. Ensure the selected variant matches the required thermal performance for the target application environment. Cross-reference datasheet specifications for series resistance values prior to integration.
Selection Notes
Select this component when a 26 MHz reference with ±20ppm stability is required in a minimal footprint. Consider the 6pF load capacitance requirement for circuit matching. Evaluate the -20°C to +70°C operating range against environmental conditions. Confirm compatibility with standard reflow soldering profiles for SMD packages.
Part Context
This part belongs to the QST QT161S series of miniature crystal resonators. The series offers various frequency options and stability grades distinguished by alphanumeric suffixes. These components are designed for high-volume consumer electronics requiring reliable timing signals in small form factors.
Replacement Considerations
Direct substitutes must match the 26 MHz frequency, 6pF load capacitance, and 4-SMD no-lead package. Verify equivalent stability ratings and operating temperature ranges. Consult manufacturer cross-reference lists for validated alternatives.
